Born in Auckland, Evans was a champion karter in both restricted 100cc karts, and also won the CIK Trophy of New Zealand at JICA level. He moved to Formula First for the 2007 season, competing in three races of the Winter Series at Manfeild Autocourse, and ending the season eighteenth in the championship. He contested the full New Zealand championship in 2007–08, finishing ninth overall and recording a fastest lap.

He returned to Manfield for the 2008 Winter Series, but in Formula Ford, winning seven of 12 races he contested to take the championship. In his national Formula Ford campaign in 2008–09, Evans battled with Tauranga's Richie Stanaway who came out on top by just over 100 points. Evans won six races during the season, including doubles at Taupo and Manfeild.

For 2009, Evans moved to the Australian Formula Ford Championship, and competed in the Victorian state championship. Evans was runner-up in the standings, losing out to CAMS Rising Star Luke Ellery in the state championship, and in the national championship to his team-mate at Sonic Motor Racing Services, Nick Percat. During the season, Evans became the youngest round winner in the championship's history, when he won at Sandown Raceway in August.[3] As well as that win, he won five other races including a weekend sweep at Queensland Raceway, and a double win at Surfers Paradise.

Evans was drafted in by Australian Formula 3 entrant Team BRM to compete for them at the final round of the season, at Sandown.[4] BRM acquired Evans' services to help with Joey Foster's championship bid. Evans was quickly on the pace, setting the fastest time in the official practice session,[5] and third in qualifying. In the first race, he ended up fourth overall and third in the Gold Star class, edging out Kristian Lindbom by just over a tenth of a second. However in the second race, Evans led home his team-mate Foster to become the youngest winner of the Formula 3 Superprix, but Foster won the Australian Drivers' Championship.[6]

Evans won the feature race at Circuit de Catalunya in Spain, having finishing sixth and seventh in the first two races at the first round which was staged at Istanbul Park in Turkey . He then went into the Valencia Grand Prix in third place in the championship, and emerged leading the championship after a third in the feature and fourth in the sprint. He held a four point lead over second placed Nigel Melker for the GP3 drivers' championship and MW Arden was leading the constructors championship too.

However, his performance dropped off for the rest of the season, and he only achieved another point scoring round when eighth in the feature race of the final round of the championship in Italy. He eventually finished ninth in the championship with 29 points.

Retained by MW Arden for the 2012 GP3 Season,[10] Evans began with a win in the feature race at the opening round of the championship in Spain.[11] He also had wins at Valencia in Spain and on the Hockenheimring in Germany, and a second and two thirds. He took his fourth pole position of the season at the final venue, Monza in Italy, but did not complete the feature race, requiring him to start from the back of the grid in race two. Evans worked his way through the field to seventh, but a puncture effectively ended his race, and the points for the fastest lap he recorded could not be claimed because he finished outside the top 10. Daniel Abt of Germany finished second in the race and was runner up to Evans in the championship by only two points.

Mark Webber told the media he was very proud of his protege, and he predicted Evans would move to GP2 in 2013. "There are a lot of good drivers in it (GP3),” he said, “yet it was Mitch who had the most poles and the most wins of anyone. He's learning all the time and I look forward to him moving up to another category next year and showing everyone what an exceptional talent he is." [12]

Webber's prediction was correct because Evans moved up to GP2 with Arden as teammate to the very experienced Johnny Cecotto Jr. In the first racing weekend of the season, at Sepang in Malaysia where he had never raced before, Evans was suffering from food poisoning and had handling problems in the first race. But he finished third in the second race[13] and at 18 years of age, and still a rookie, he became the youngest GP2 driver to stand on the podium.[14]

For the 2014 season Evans moved to the Russian Time team alongside Artem Markelov. He took his maiden victory at Silverstone and then a second at Hockenheim, in what was GP2's 200th race. Four extra podium appearances saw him finish fourth in the standings on 174 points.

^"2009 Formula Ford finale a cracker". autosports.com.au (Auto Sports). 25 October 2009. Retrieved 2010-01-26. A season where we saw lap records tumble at every round, the introduction of our EWP 'Hard-Charger' and IMA 'Pole Position' Awards, and our youngest ever competitor and round winner in the form of Mitch Evans – here's hoping 2010 provides us with just as many exciting moments.[dead link]

^"Evans, Bamber in Toyota Racing Series battle". Stuff.co.nz (Fairfax New Zealand Limited). 17 March 2010. Retrieved 2010-03-21. Evans, a St Kentigern's College schoolboy who has never been to Europe, said he had endured an "up and down season" but said he has learnt what it will take to win the title.